Make a basic, powerless amplifier for your mobile phone/mp3 player! Making use of a piece of wood, some copper pipes and a few applications we can tunnel by and make a “loud speaker” to amplify our new music without having the have to have for wires. The audio will journey by the holes and out of the horn at the best.

Music by: Almost everything Under (EU)
Examine them out below: http://www.youtube.com/everythingundereu
Down load on iTunes: http://bit.ly/gwzo8d .
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